BUG: Fixed a rendering artifact with the bars.
BUG: Fixed a rendering artifact with the bars.

The height of the bars was reduced when grouping due, this is now
corrected and the logic is hopefully a little clearer.

johnkit/vtk-dev,hendradarwin/VTK,cjh1/VTK,cjh1/VTK,SimVascular/VTK,jmerkow/VTK,biddisco/VTK,SimVascular/VTK,mspark93/VTK,sankhesh/VTK,berendkleinhaneveld/VTK,jeffbaumes/jeffbaumes-vtk,mspark93/VTK,SimVascular/VTK,msmolens/VTK,naucoin/VTKSlicerWidgets,biddisco/VTK,spthaolt/VTK,jmerkow/VTK,collects/VTK,berendkleinhaneveld/VTK,jmerkow/VTK,daviddoria/PointGraphsPhase1,candy7393/VTK,arnaudgelas/VTK,spthaolt/VTK,gram526/VTK,sumedhasingla/VTK,naucoin/VTKSlicerWidgets,johnkit/vtk-dev,arnaudgelas/VTK,sankhesh/VTK,mspark93/VTK,sumedhasingla/VTK,ashray/VTK-EVM,arnaudgelas/VTK,msmolens/VTK,collects/VTK,sankhesh/VTK,sumedhasingla/VTK,demarle/VTK,berendkleinhaneveld/VTK,msmolens/VTK,demarle/VTK,aashish24/VTK-old,cjh1/VTK,SimVascular/VTK,aashish24/VTK-old,ashray/VTK-EVM,johnkit/vtk-dev,johnkit/vtk-dev,hendradarwin/VTK,Wuteyan/VTK,daviddoria/PointGraphsPhase1,johnkit/vtk-dev,Wuteyan/VTK,demarle/VTK,aashish24/VTK-old,sankhesh/VTK,mspark93/VTK,candy7393/VTK,demarle/VTK,SimVascular/VTK,arnaudgelas/VTK,aashish24/VTK-old,Wuteyan/VTK,johnkit/vtk-dev,gram526/VTK,naucoin/VTKSlicerWidgets,sumedhasingla/VTK,jeffbaumes/jeffbaumes-vtk,jmerkow/VTK,johnkit/vtk-dev,berendkleinhaneveld/VTK,berendkleinhaneveld/VTK,collects/VTK,keithroe/vtkoptix,aashish24/VTK-old,biddisco/VTK,demarle/VTK,ashray/VTK-EVM,sumedhasingla/VTK,sumedhasingla/VTK,jeffbaumes/jeffbaumes-vtk,spthaolt/VTK,hendradarwin/VTK,collects/VTK,SimVascular/VTK,naucoin/VTKSlicerWidgets,naucoin/VTKSlicerWidgets,keithroe/vtkoptix,ashray/VTK-EVM,demarle/VTK,cjh1/VTK,mspark93/VTK,msmolens/VTK,arnaudgelas/VTK,candy7393/VTK,collects/VTK,cjh1/VTK,gram526/VTK,daviddoria/PointGraphsPhase1,biddisco/VTK,spthaolt/VTK,berendkleinhaneveld/VTK,mspark93/VTK,sankhesh/VTK,keithroe/vtkoptix,jeffbaumes/jeffbaumes-vtk,jmerkow/VTK,hendradarwin/VTK,keithroe/vtkoptix,jeffbaumes/jeffbaumes-vtk,jmerkow/VTK,Wuteyan/VTK,hendradarwin/VTK,ashray/VTK-EVM,sankhesh/VTK,gram526/VTK,gram526/VTK,daviddoria/PointGraphsPhase1,candy7393/VTK,candy7393/VTK,ashray/VTK-EVM,msmolens/VTK,SimVascular/VTK,aashish24/VTK-old,arnaudgelas/VTK,demarle/VTK,naucoin/VTKSlicerWidgets,keithroe/vtkoptix,daviddoria/PointGraphsPhase1,sumedhasingla/VTK,spthaolt/VTK,sankhesh/VTK,mspark93/VTK,keithroe/vtkoptix,SimVascular/VTK,hendradarwin/VTK,demarle/VTK,daviddoria/PointGraphsPhase1,mspark93/VTK,Wuteyan/VTK,msmolens/VTK,keithroe/vtkoptix,berendkleinhaneveld/VTK,collects/VTK,spthaolt/VTK,gram526/VTK,hendradarwin/VTK,jeffbaumes/jeffbaumes-vtk,sumedhasingla/VTK,candy7393/VTK,msmolens/VTK,candy7393/VTK,ashray/VTK-EVM,Wuteyan/VTK,sankhesh/VTK,spthaolt/VTK,ashray/VTK-EVM,gram526/VTK,gram526/VTK,candy7393/VTK,keithroe/vtkoptix,biddisco/VTK,cjh1/VTK,jmerkow/VTK,biddisco/VTK,msmolens/VTK,Wuteyan/VTK,jmerkow/VTK,biddisco/VTK